Annealing pot



2 Sheets-Sheet l June 21, 1932. H. E. GRAHAM ANNEALING POT Filed Nov. 121, 1931 m n .w Wi v J/ 6 M 3 D n d, willi m .o M n w .j i1. f/%|L V lr\|l/% d 4L June 21, 1932.

H. E. GRAHAM ANNEALING POT Filed Nov. 14, 1931 wh; A

I 2 sheets-sheet 2 Patented June 21, 1932 UNITED i STATES PATENT orries `I-I'ERIYIAIY E. GRAHAM, 0F MARION, INDIANA, ASSGNOR T0 CHICAGO IR-ALWAY EQUITEL MENT COMPANY, OF CHICAGO, LLINOIS, A COBPORATEON OF LLINOIS ANNEALING Por Application led November 14, 1931. Serial No. 575,100.

This invention relates to pots for use in an annealin oven.

Annea lng pots of the present type `are usually stacked one above the other in the annealing oven and'each pot is provided with a tjop :flange oifset outwardly and having an inner ledge for receiving the bottom of the superimposed pot. The joints are mudded before heating in order to make the pots air tight. Where the mudding is done before the pots are slid into the oven on thel charger, the

rough floor of the oven frequently causes injury tothe mudded joint, which must be repaired. Moreover, after the charge has beenldumped considerable time and, labor is required in cleaning up the pots, ovens, and

iioor of the` annealing department. n Y

Also the pots at present in use have a tendency to bulgeoutwardly during heating and gradually assume `a circular shape; This decreases Athe capacity of the pots and ,makes increasingly-`dieult theV sealing of the oi'nts` between the pots due to irregularities. AlsoA the fioor ofthe pots tend to sag due to they weight ofthe metalbeingannealed.

v One object of the present invention is toV provide an annealing pot which will overf eometlie above disadvantages and which will last longer than pots at present in use.

Another object is to provide a pot which,

" 'i when stacked with other pots, will assist in maintaining the original shaping of the next lower-pot, and which will form a desirably tight joint with the adjacent pots without the use of mud or fire clay.V

Another object is toprovide means for adequately supporting the Vfloors of the stacked pots.

- These objects and others are attained in the structure illustrated inthe accompanyingrdrawings in whichigure lis a top view of the pot. Figure2 is in part a side vview of the same and in part a vertical longitudinal section and also showing a portion of a superimposed p ot.

Figure 3 is an end view of the pot. Figures 4 to 8, inclusive'j are fragmentary vertical transverse sections showing modified forms of pots stacked one above the other.

My improved annealing pot is substantially rectangular in shape and includes side walls 1 and end Walls 2 having an outward horizontal flange 3 extending entirely around the pot near the top of the walls thereof.` l

The walls extend upwardly a .short distance beyond flange 3 to form an upright ange or rib 4. The side and end wallsv are further braced by ribs 5 and 6 on the outside of the pot, ribs 6 merging with carrier trunnion bearings 8.V

Bottom 9 of the pot extends outwardlya short distance beyond the upright walls thereof and is provided with a depending flange 10:- Bottom 9 is bracedon the underside by diagonal ribs 1l.

l The outer ends of ribs 11 are substantially fiush with the inner surface of walls 1 and 2,

and the inner surface of flange 10 is flush with the outer surface of flange 4. Thus, when the pots are stacked one above'the other7 top iiange4Y of each pot'will t snugly insidel of bottom flange 10 of the next higher pot and Vthe bottom of flange 10 of the latter pot will rest upon the top of flange 3 of the lower pot v The pot is also provided with a central upright post 12 projecting from the center of the floor 9 which extends substantially the entire depth of the potand is long` enough to seat against the boss 13 at the intersection of ribs 11 of'a superimposed pot in a stack. Y Post 12 supports the floor of the upper pot andprevents sagging. This postvmay be formed integral with the ioor of the pot, as shown, or may be otherwise secured to the fioor'.

A cover (not shown) is provided for the topmost pot inthe stack-whichhas a depending Harige corresponding with flange 10. The

joints to settle more tightly to- Y centrally located bosses 17 vand 18 and sockets 19 and 2O for receiving the ends of posts 21. Each post is of suiiicient length to extend from the upper socket 19 of one floor member to the lower socket 20 of the next higher floor member in a stack and serves to su port the latter member. Y

n Figure 5, the floor member 22 isformed integrally with the walls of the pot and has parallel ribs 23 extending around the lower surface thereof for snugly receiving the upper edges of the walls of the next lower pot.V Arhorizontal flange 2a extends around the pot near the top thereof. Member 22 also has central bosses 25 and 26 and sockets 27 andl 28 for seating posts 29. l

In'Figure 6 a bead 29 surrounds the lower edge kof the pot and the upper edge of the pot is provided with a complementary recess for recieving bead 29 of the next higher pot in a stack.

In Figures? and 8 horizontal flanges, as 31A andf32 in Figure 7, surround the lower and upper edges ofthe pot respectively. The' lower surface of the bottom flange and the upper surface of the top flange are provided with complementary elements, as 33 and 34, respectively, each of which cooperates with the complementary element of theadjacent pot in a stack to form an airtight joint therewith. In Figure 7 these elements are substantially circular in section; and inV Figure 8 the interengaging elements 35 and 36 are triangular in section. Y L

, Due to the interlocking walls of adjacent pots, each maintains its rectangular' shaping considerably longer'than old style pots. This feature of the invention, as well as the location oftlie bracing ribs on the outside instead of on the inside, as is the usual practice at present, affords 'the maximum capacity while at the same time resulting in ample draft space around the walls j of Vthe oven. Furthermore, since the use of mudded joints is unnecessary, considerable time and labor is saved both in preparingthe stacked pots for heating and in cleaning up. the annealing department after dumping.`

Obviously, the structure illustrated may be varied as to certain details without departing from the spirit of the invention, and the exelusive use ofall such modifications asl come within the scope of the appended claims is contemplated'.

lVhat is claimed is: Y

1. In an annealing pot, side and end walls, a horizontal flange surrounding therpot at the tops of' said walls, an upright flange extending above said horizontalflange, and a depending flange surrounding said pot at the bottom of said walls, said pot beingarranged to be stacked with other similar pots, and said depending flange being shapedto lit snugly over the top flange of the next lower pot in a stack and seatagainst the vhorizontal pot in a stack to form a desirably tight joint 2. Inan annealing pot', side walls, a floorelement, and apost projecting upwardly from said element, saidv pot being arranged to.be stacked with other similar pots, and said post being of a height to engage the floor of the next higher pot in a stack and support the same.

3. In an annealing pot substantially upright Walls, a lioor element, bracing ribs beneath said floor, said ribs intersecting in a boss, and a post projecting upwardly from the portion of said floor directly above said boss, said pot being arrangedto be stackedf with other similar pots, and said lpost being of Ysuiicient length Vto seat Aagainst the boss under the iloor of the superimposed pot and support said floor. j

4. In an annealing pot substantially kup-Y right walls, a floor, dependingflanges surrounding said'pot beneath'said floor, and

and assist in preventing bulging of said low pot., f

Abracing ribs on the under surface of said floor,

between said ribs and saiddepe'ndingflange,

to permitrrthe insertion therebetween of thetops of the walls of said vnextflower'potJwf" 'y 5.j 'In combination,a plurality ofY .anne'aling4v pots stacked onefabove'the other,V said pots.

each including side walls, a floor, landa pe# ripheral flange dependingfrom Vsaid floor, said llange fitting snugly `over and outside' of thetop oftheY next lowerV pot, and saidvv los flange and said floor serving to vassist in maini taining the original shape Vof said 4lower pot,y during,heating. 'n 6. In combination, a plurality of annealing vpots stacked Vone aboveV the" other, said pots being similar and each including up-v right walls, a floor, a depending flange surrounding said pot beneath, said floor, and a" post extending upwardly from the centerof v said floor, said 'flange being shaped to lit snugly over and outside of the top of the next lower pot and forma desirablyA tightv jointl Y therewith, and saidpost engaging the floor of the next higher pot and supporting the same, all of thedependingflangesfand posts in the stack assisting in maintaining the Ioriginal 'shaping ofsaid potsduringheating.

7. In an annealing pot, substantially up-V right walls, and azseparat/elyjformed closure member having a peripheral groove extend- Y ing around a surface. thereof and adapted to snugly receive the edges of' said walls whereby a desirably tight joint will be formed' without the use of filler material. Y j

8. In an annealing pot, side walls, a sepal rately formed iioor member having elements extending around the uppei` surface thereof and adapted to snugly receive the lower edges of said walls, and having a central socket, said pot being adapted to be stacked with other similar pots, and a post shaped to be inserted in said socket and to support the ioor of the next higher pot in a stack.`

9. In an annealing pot, substantially upright walls, al floor member having parallel ribs on the upper and lower surface thereof forming grooves and central sockets on said Y surfaces, said pot being adapted to be stacked with other similar pots, andsaid upper and lower grooves being shaped, respectively, to snugly receive the lower edges of'said walls and the upper edges of the walls of the next lower pot in a stack, and a post shaped to seat in said upper socket and to extend into the lower socket of thenext higher floor member in a stack.

10. In an annealing pot, substantially up-v right walls and afloor member having parallel ribs on the under surface thereof forming a groove surrounding the same, said pot be- Y jacent one end, said flange being adapted to seat against the edge of an adjacent pot in a stach and the tops of said walls-being shaped to t snugly inside the bottom portions of the'walls of the next higher pot and to cooperate with said flange and said portions in forming a desirably tight joint, the walls of said higher pot assisting in preventing bulging of said first-mentioned pot and thereby maintaining the tightness of said joint.

15. Inanannealing pot, side walls,an element connecting the lower portions of said walls and preventing bulging of said walls, said pot being adapted vto be stacked with other similar pots and said walls at the top being shaped to fit snugly inside the lower portions of the walls of the next higher pot in a stack whereby said element also prevents bulging of the walls of said lower pot.

In testimony whereof I hereunto affixmy signature this 30 day of October, 1931.

HERMAN E. GRAHAM.

ing the top and bottom edges of said walls,

respectively, said pot being Vadapted to beV stacked with other similar pots, and complement-ary interengaging elements on said surfaces, each of said elements being arranged to cooperate with the complementary element on the adjacent pot in a stack to form a desirably tight joint therewith and assist in maintaining the original shaping of the walls thereof.

12. An annealing pot having substantially upright walls, said pot being adapted to be stacked with other similar pots and the inner surfaces vof said walls at the bottom closely conforming in size and shape with the outer surfaces of the same at the top whereby a desirably tight joint will be formed between stacked pots and the walls of each superimposed pot in a stack will assist in maintaining the shaping of the next lower pot.

13. In combination, an annealing pot having walls open at at least one end, said pot being adapted to be stacked with other similar pots, and a closure member for said open end having peripheral groove forming elements on its faces disposed to snugly receive the edges of adjacent pots in a stack and to form therewith desirably tight joints without filler material and to assist in maintaining the shaping of said pots. i

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